CN216713155U - Front-back double-push soil shovel system for excavator and highway-railway dual-purpose excavator - Google Patents
Front-back double-push soil shovel system for excavator and highway-railway dual-purpose excavator Download PDFInfo
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- CN216713155U CN216713155U CN202123083771.6U CN202123083771U CN216713155U CN 216713155 U CN216713155 U CN 216713155U CN 202123083771 U CN202123083771 U CN 202123083771U CN 216713155 U CN216713155 U CN 216713155U
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Abstract
The utility model discloses a front-rear double-push earth shovel system for an excavator and a highway-railway dual-purpose excavator, and belongs to the technical field of excavator equipment research and development. The system comprises a central rotary joint, a control assembly, a switching valve assembly, a front lifting oil cylinder and a rear lifting oil cylinder; the front lifting oil cylinder and the rear lifting oil cylinder are respectively hinged at the front end and the rear end of a chassis of the excavator; the switching valve assembly is connected with the central rotary joint through a first oil path, and the switching valve assembly is respectively connected with the front lifting oil cylinder and the rear lifting oil cylinder through a second oil path and a third oil path; the control assembly comprises a control chip, a first signal transmission assembly, a second signal transmission assembly and a power supply, and the control assembly is electrically connected with the switching valve assembly. According to the utility model, the oil passages of the front lifting oil cylinder and the rear lifting oil cylinder are controlled by the control assembly and the switching valve assembly, so that the independent control of the front and rear dozer blades of the conventional excavator is realized with minimum change; the excavator applicability is improved, and manual switching of getting-off of operators is avoided.
Description
Technical Field
The utility model belongs to the technical field of development of excavator equipment, and particularly relates to a front-rear double-push earth shovel system for an excavator and a highway-railway dual-purpose excavator.
Background
Conventional excavators are difficult to implement when used for maintenance of railways or various works around railways due to their large size and restrictions on railways and the surrounding terrain environment. If the special plane is used, the cost is high, the occupied time of the railway is too long, the occupied space is too large, the normal operation of the railway is easily influenced, and the special plane is not suitable for daily maintenance operation. In order to solve the above problems, the existing road and railway dual-purpose excavator mainly has two implementation modes in the aspect of a road and railway switching system: one is that there is no dozer blade only has front and back guide wheels, this kind of scheme can meet most of working conditions while operating in the railway, but there is no function of the dozer blade while operating in the highway, has influenced the operating range, the control requirement to the front and back guide wheels is not high while operating in the highway, usually adopt the direct parallel way of hydraulic circuit to realize the control of the front and back guide wheels; the utility model provides a be that excavator the place ahead sets up the dozer blade, and the leading wheel installs additional in the dozer blade below, and the rear is equipped with the leading wheel, is equipped with simultaneously or does not establish the dozer blade, and the front and back dozer blade is with ball valve manual control when needing independent action. Usually, only one blade control circuit is arranged on the excavator, so that two blades cannot be effectively controlled, and if one control circuit is additionally arranged at the central rotary joint, the whole excavator is greatly changed.
For example, a chinese granted patent CN214460732U provides a highway-railway dual-purpose excavator, which comprises a lower frame and a connecting frame, wherein the connecting frame is respectively arranged at the front end and the rear end of the lower frame, the front end and the rear end of the lower frame are both provided with a first ear plate and a second ear plate, the second ear plate is hinged with one end of the connecting frame, the first ear plate is hinged with an oil cylinder, and the other end of the oil cylinder is hinged with the middle part of the connecting frame; the end part of the connecting frame is provided with an end plate, the front part of the end plate is rotatably connected with a wheel shaft, two ends of the wheel shaft are provided with a guide wheel and a baffle plate, and the front lower part of the wheel shaft is provided with a push shovel for clearing obstacles.
For example, chinese patent application CN112746646A provides a chassis mechanism of a highway excavator, in which two wheel frames capable of rotating up and down are provided at two ends of a main frame, a hydraulic cylinder mechanism rotatably connected to the wheel frames is rotatably provided at two ends of the main frame, a road wheel mounting hole is provided at an end of the wheel frame, and a blade or a wheel can be mounted on the wheel frame.
If the front and rear dozer blades of the excavator with the public and railway dual-purpose functions are additionally provided with the dozer blades, the two dozer blades cannot operate simultaneously, or the ball valve is used for dividing the control loop into two parts to realize the independent or simultaneous operation of the dozer blades. These several methods all require manual operation, are inconvenient for frequent switching and are inefficient.
Disclosure of Invention
Aiming at the defects of the prior art, in order to achieve the purposes of being provided with a front soil pushing shovel and a rear soil pushing shovel and being capable of being independently controlled to meet the working condition requirements of road/railway operation, simultaneously abandoning a manual control mode and realizing the purpose of one-key operation of a driver in a cab, the utility model provides a road-rail dual-purpose excavator with the front and rear soil pushing shovels and a control system thereof, wherein the system transmits an operation signal to a signal receiving and control device of a chassis through a signal transmitting device, and controls an electromagnetic valve to execute corresponding control actions through the signal receiving and control device, thereby realizing the action of independently controlling the front and rear soil pushing shovels by one division of a control loop; the construction operation of the railway and the highway can be efficiently and quickly realized, and the normal railway operation is not influenced; specifically, the following technique is used.
The front-rear double-push soil shovel system for the excavator comprises a central rotary joint, a control assembly, a switching valve assembly, a front lifting oil cylinder and a rear lifting oil cylinder; the front lifting oil cylinder and the rear lifting oil cylinder are respectively hinged to the front end and the rear end of a chassis of the excavator; the switching valve assembly is connected with the central rotary joint through a first oil way, and is respectively connected with the front lifting oil cylinder and the rear lifting oil cylinder through a second oil way and a third oil way; the control assembly comprises a control chip, a first signal transmission assembly, a second signal transmission assembly and a power supply, and the control assembly is electrically connected with the switching valve assembly.
The front and rear double-push shovel system utilizes the control assembly to electrically control the working state of the switching valve assembly, and further controls the working states of the front lifting oil cylinder and the rear lifting oil cylinder. The central swivel joint controls the extension and retraction of the front lifting oil cylinder (or the rear lifting oil cylinder) through the first oil way and the switching valve component and the second oil way (or the third oil way). As a basic function of the control assembly, the second signal transmission assembly in the control assembly is used for sending an operation instruction, the first signal transmission assembly is used for receiving the instruction sent by the second signal transmission assembly and then transmitting the instruction to the control chip, and the control chip further sends an instruction to control the opening and closing state or opening and closing position of each valve in the switching valve assembly, so that the connection or disconnection of the first oil path, the second oil path and the third oil path is completed. The mode of sending the instruction by the second signal transmission component can be set to be a wired transmission mode or a wireless transmission mode. The front lifting oil cylinder and the rear lifting oil cylinder are respectively and correspondingly connected with a front dozer blade and a rear dozer blade of the excavator.
Preferably, the control chip, the first signal transmission assembly and the power supply are arranged on a chassis of the excavator, and the second signal transmission assembly is in wired or wireless connection with the control chip. The control chip, the first signal transmission assembly and the power supply are arranged at appropriate positions on the chassis, so that the circuit arrangement can be simplified, and the abrasion, the fault or the aging of the circuit in the long-term use process can be avoided.
Preferably, the first signal transmission assembly comprises a circuit board and a signal receiving module; the second signal transmission component comprises a circuit board, a signal transmitting module and a key or a control lever. The excavator operator sends a working instruction to the control assembly by pressing a key or a control lever on the second signal transmission assembly.
More preferably, the first signal transmission assembly further comprises a signal transmitting module; the second signal transmission assembly further comprises a signal receiving module. In order to improve the working state control of an excavator operator on the front lifting oil cylinder and the rear lifting oil cylinder of the excavator, the function of working state monitoring can be added on the first signal transmission assembly, namely, the working states of the front lifting oil cylinder, the rear lifting oil cylinder and the switching valve assembly on the chassis are sent to the second signal transmission assembly by the signal transmitting module, so that the excavator operator can maintain, repair and replace the front lifting oil cylinder, the rear lifting oil cylinder and the switching valve assembly in time.
Preferably, the first signal transmission assembly, the control chip and the switching valve assembly are integrally arranged; or the first signal transmission assembly is arranged independently, and the control chip and the switching valve assembly are arranged in an integrated mode. In order to reduce the occupied space on the chassis and uniformly manage the electronic components, the integration degree of part of the electronic components in the control assembly and the switching valve assembly can be improved.
Preferably, the second signal transmission assembly is arranged in a cab of the excavator, or on a shell of the excavator, or is in a wireless remote control structure. The second signal transmission assembly can be arranged in a cab, the excavator is external, a remote controller can be manufactured to facilitate operators, and any two or three installation positions can be arranged at the same time to improve operation convenience.
Preferably, the switching valve assembly comprises a valve a1, a valve a2, a valve B1 and a valve B2 of a solenoid valve structure, the valve B1 is connected with the front lift cylinder through an oil inlet pipe of a second oil path, and the valve B2 is connected with the front lift cylinder through an oil outlet pipe of the second oil path; the valve A1 is connected with the rear lift cylinder through an oil inlet pipe of a third oil path, and the valve A2 is connected with the rear lift cylinder through an oil outlet pipe of the third oil path; or the switching valve component is a two-position six-way electromagnetic directional valve.
As a first specific configuration of the switch valve assembly, when the switch valve assembly includes the valves a1, a2, B1, and B2 of the solenoid valve structure, the front and rear dozer blades of the excavator can be provided with four operating states. The above mentioned solenoid valve, besides the solenoid valve containing the conventional leakage amount, also includes the zero leakage or near zero leakage solenoid ball valve, that is, as long as the valve structure is similar to the structure and functional principle of the conventional solenoid valve, all belong to the definition range of the above mentioned solenoid valve. The working process is as follows:
(1) the front and rear dozer blade switching valves work simultaneously: when the valves A1, A2, B1 and B2 are not electrified, the second oil way and the third oil way of the front lifting oil cylinder and the rear lifting oil cylinder are communicated with the first oil way of the central rotary joint, the front lifting oil cylinder and the rear lifting oil cylinder start to extend and retract, and the corresponding front dozer blade and the corresponding rear dozer blade can simultaneously act;
(2) only the front blade or the rear blade works: when the valves A1 and A2 are powered on and closed, and the valves B1 and B2 are not powered on, only the second oil way of the front lifting oil cylinder is communicated with the first oil way of the central rotary joint, and the third oil way of the rear lifting oil cylinder is disconnected with the first oil way of the central rotary joint, so that only the front lifting oil cylinder can work;
similarly, when the valves B1 and B2 are powered on and closed and the valves A1 and A2 are not powered on, only the third oil way of the rear lifting oil cylinder is communicated with the first oil way of the central rotary joint, and the second oil way of the front lifting oil cylinder is disconnected with the first oil way of the central rotary joint, so that only the rear lifting oil cylinder can work;
(3) when the valves a1, a2, B1, and B2 are all energized, the second oil passage and the third oil passage are both disconnected, and neither the front lift cylinder nor the rear lift cylinder is able to operate.
As a second specific structural form of the switch valve assembly, when the switch valve assembly is a two-position six-way electromagnetic directional valve, by changing the state of the two-position six-way electromagnetic directional valve, any one of the front dozer blade and the rear dozer blade can be operated. However, the two-position six-way electromagnetic directional valve cannot control the front and rear dozer blades to work and cannot control the front and rear dozer blades to stop working at the same time.
More preferably, the valve a1 and the valve a2 are integrally arranged on the rear lift cylinder, and the valve B1 and the valve B2 are integrally arranged on the front lift cylinder.
Preferably, the power supply is a replaceable battery or a rechargeable battery jar.
A highway-railway dual-purpose excavator provided with any one of the front-rear double-push soil shovel systems.
Compared with the prior art, the utility model has the advantages that: the utility model provides a front and rear dozer blade switching system, which is characterized in that the oil way states of a front lifting oil cylinder and a rear lifting oil cylinder are controlled by arranging a control assembly and a switching valve assembly, and one-key independent control of the front and rear dozer blades is realized on a conventional excavator with minimum change; the applicability of the highway-railway dual-purpose excavator in railway and non-railway working conditions is greatly improved, the action that operators need to get off to manually switch is avoided, and the field productivity is improved.
Drawings
FIG. 1 is a schematic structural view of a front-rear double blade system according to embodiment 1;
FIG. 2 is a schematic structural view of the front-rear double push shovel system of embodiment 1 mounted on the chassis of an excavator;
FIG. 3 is a schematic diagram showing the connection of an oil circuit and an electric circuit of the front-rear double-push shovel system of embodiment 1, and the switching valve assembly in FIG. 3 is a plurality of solenoid valves;
FIG. 4 is a schematic diagram showing the connection of an oil circuit and an electric circuit of the front and rear double-push shovel system of embodiment 1, and the switching valve assembly in FIG. 4 is a plurality of electromagnetic ball valves;
FIG. 5 is a schematic diagram showing the connection of an oil circuit and an electric circuit of the front-rear double-push shovel system of embodiment 1, and the switching valve assembly in FIG. 5 is a two-position six-way electromagnetic directional valve;
in the figure: 1. a central swivel joint; 2. a switching valve assembly; 3. a front lift cylinder; 4. a rear lift cylinder; 5. a chassis; 6. a first oil passage; 7. a second oil passage; 8. a third oil passage; 9. a control chip; 10. a first signal transmission assembly; 11. a second signal transmission assembly; 12. a power source.
Detailed Description
The technical solutions of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of this patent, it is noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the patent and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the patent. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of this patent, it is noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "communicating" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. It is to be noted that all the figures are exemplary representations. The meaning of the above terms in this patent may be specifically understood by those of ordinary skill in the art.
The patent is described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Example 1
As shown in fig. 1 to 4, the front-rear double-push earth shovel system for an excavator provided by the present embodiment includes a central swivel joint 1, a control assembly, a switching valve assembly 2, a front lift cylinder 3, and a rear lift cylinder 4; the front lifting oil cylinder 3 and the rear lifting oil cylinder 4 are respectively hinged at the front end and the rear end of a chassis 5 of the excavator; the switching valve assembly 2 is connected with the central rotary joint 1 through a first oil path 6, and the switching valve assembly 2 is respectively connected with the front lifting oil cylinder 3 and the rear lifting oil cylinder 4 through a second oil path 7 and a third oil path 8; the control assembly comprises a control chip 9, a first signal transmission assembly 10, a second signal transmission assembly 11 and a power supply 12, and is electrically connected with the switching valve assembly 2; the first signal transmission assembly 10 comprises a circuit board and a signal receiving module; the second signal transmission component 11 comprises a circuit board, a signal transmitting module and a key or a control lever;
the switching valve assembly comprises a valve A1, a valve A2, a valve B1 and a valve B2 which are of an electromagnetic valve or electromagnetic ball valve structure, the valve B1 is connected with the front lifting oil cylinder 3 through an oil inlet pipe of a second oil path 7, and the valve B2 is connected with the front lifting oil cylinder 3 through an oil outlet pipe of the second oil path 7; the valve A1 is connected with the rear lift cylinder 4 through an oil inlet pipe of a third oil path 8, and the valve A2 is connected with the rear lift cylinder 4 through an oil outlet pipe of the third oil path 8.
In the front-rear double-push shovel system, the central rotary joint controls the front lifting oil cylinder (or the rear lifting oil cylinder) to stretch and retract through the first oil way and the way switching valve component and the second oil way (or the third oil way). As a basic function of the control assembly, the second signal transmission assembly in the control assembly is used for sending an operation instruction, the first signal transmission assembly is used for receiving the instruction sent by the second signal transmission assembly and then transmitting the instruction to the control chip, and the control chip further sends an instruction to control the opening and closing state or opening and closing position of each valve in the switching valve assembly, so that the connection or disconnection of the first oil path, the second oil path and the third oil path is completed. The front lifting oil cylinder and the rear lifting oil cylinder are respectively and correspondingly connected with a front dozer blade and a rear dozer blade of the excavator. The excavator operator sends a working instruction to the control assembly by pressing a key or a control lever on the second signal transmission assembly. The front and rear double-blade system can enable the front blade and the rear blade of the excavator to have four working states, and the working process is as follows:
(1) the front and rear dozer blade switching valves work simultaneously: when the valves A1, A2, B1 and B2 are not electrified, the second oil way and the third oil way of the front lifting oil cylinder and the rear lifting oil cylinder are communicated with the first oil way of the central rotary joint, the front lifting oil cylinder and the rear lifting oil cylinder start to extend and retract, and the corresponding front dozer blade and the corresponding rear dozer blade can simultaneously act;
(2) only the front blade or the rear blade works: when the valves A1 and A2 are powered on and closed, and the valves B1 and B2 are not powered on, only the second oil way of the front lifting oil cylinder is communicated with the first oil way of the central rotary joint, and the third oil way of the rear lifting oil cylinder is disconnected with the first oil way of the central rotary joint, so that only the front lifting oil cylinder can work;
similarly, when the valves B1 and B2 are powered on and closed and the valves A1 and A2 are not powered on, only the third oil way of the rear lifting oil cylinder is communicated with the first oil way of the central rotary joint, and the second oil way of the front lifting oil cylinder is disconnected with the first oil way of the central rotary joint, so that only the rear lifting oil cylinder can work;
(3) when the valves a1, a2, B1, and B2 are all energized, the second oil passage and the third oil passage are both disconnected, and neither the front lift cylinder nor the rear lift cylinder is able to operate.
Preferably, the valve a1 and the valve a2 are integrally arranged on the rear lift cylinder, and the valve B1 and the valve B2 are integrally arranged on the front lift cylinder. Therefore, the integration level of various electronic components and equipment can be further improved.
Preferably, the control chip, the first signal transmission assembly and the power supply are arranged on a chassis of the excavator, and the second signal transmission assembly is in wired or wireless connection with the control chip. The control chip, the first signal transmission assembly and the power supply are arranged at appropriate positions on the chassis, so that the circuit arrangement can be simplified, and the abrasion, the fault or the aging of the circuit in the long-term use process can be avoided.
Preferably, the first signal transmission assembly further comprises a signal transmitting module; the second signal transmission assembly further comprises a signal receiving module. In order to improve the control of the working state of the front and rear lifting cylinders of the excavator by an excavator operator, the working states of the front lifting cylinder, the rear lifting cylinder and the switching valve assembly on the chassis are sent to the second signal transmission assembly by the signal transmission module, so that the excavator can be conveniently maintained, repaired and replaced by the operator in time.
Preferably, the first signal transmission assembly, the control chip and the switching valve assembly are integrally arranged; or the first signal transmission assembly is arranged independently, and the control chip and the switching valve assembly are arranged in an integrated mode. The preferable structural form is also to reduce the occupied space on the chassis, uniformly manage the electronic components and improve the integration degree of part of the electronic components and the switching valve component in the control component.
Preferably, the power supply is a replaceable battery or a rechargeable battery jar.
Example 2
As shown in fig. 5, the only difference between the front-rear double push shovel system for an excavator provided by the present embodiment and embodiment 1 is that the switching valve assembly 2 is a two-position six-way electromagnetic directional valve. When the two-position six-way electromagnetic directional valve is used, the front dozer blade and the rear dozer blade can work by changing the state of the two-position six-way electromagnetic directional valve. However, the two-position six-way electromagnetic directional valve cannot control the front and rear dozer blades to work and cannot control the front and rear dozer blades to stop working at the same time.
The practice of the present invention is described in detail in the above examples, but the present invention is not limited to the specific details in the above embodiments. Within the scope of the claims and the technical idea of the utility model, a number of simple modifications and changes can be made to the technical solution of the utility model, and these simple modifications are within the scope of protection of the utility model.
Claims (10)
1. The front-rear double-push soil shovel system for the excavator is characterized by comprising a central rotary joint, a control assembly, a switching valve assembly, a front lifting oil cylinder and a rear lifting oil cylinder; the front lifting oil cylinder and the rear lifting oil cylinder are respectively hinged to the front end and the rear end of a chassis of the excavator; the switching valve assembly is connected with the central rotary joint through a first oil way, and is respectively connected with the front lifting oil cylinder and the rear lifting oil cylinder through a second oil way and a third oil way; the control assembly comprises a control chip, a first signal transmission assembly, a second signal transmission assembly and a power supply, and the control assembly is electrically connected with the switching valve assembly.
2. The fore-and-aft double-push shovel system for an excavator according to claim 1, wherein the control chip, the first signal transmission assembly and the power supply are arranged on a chassis of the excavator, and the second signal transmission assembly is connected with the control chip in a wired or wireless mode.
3. The fore-aft double push shovel system for an excavator according to claim 1 or 2 wherein the first signal transmission assembly comprises a circuit board, a signal receiving module; the second signal transmission component comprises a circuit board, a signal transmitting module and a key or a control lever.
4. The fore-aft double push shovel system for an excavator according to claim 3 wherein the first signal transmission assembly further comprises a signal transmitting module; the second signal transmission assembly further comprises a signal receiving module.
5. The tandem push shovel system for an excavator of claim 1 wherein the first signal transmission assembly, the control chip and the switching valve assembly are integrally provided; or the first signal transmission assembly is independently arranged, and the control chip and the switching valve assembly are integrally arranged.
6. The fore-aft double push shovel system for an excavator according to claim 1 wherein the second signal transmission assembly is located in a cab of the excavator and/or on a housing of the excavator and/or is a wireless remote controlled structure.
7. The tandem push shovel system for an excavator according to claim 1, wherein the switching valve assembly comprises a valve a1, a valve a2, a valve B1 and a valve B2 of a solenoid valve structure, the valve B1 is connected with the front lift cylinder through an oil inlet pipe of a second oil passage, and the valve B2 is connected with the front lift cylinder through an oil outlet pipe of the second oil passage; the valve A1 is connected with the rear lift cylinder through an oil inlet pipe of a third oil path, and the valve A2 is connected with the rear lift cylinder through an oil outlet pipe of the third oil path;
or the switching valve component is a two-position six-way electromagnetic directional valve.
8. The tandem push shovel system for an excavator according to claim 7 wherein the valve a1, valve a2 are integrally provided on the rear lift cylinder and the valve B1 and valve B2 are integrally provided on the front lift cylinder.
9. The fore-aft double push dozer system for an excavator of claim 1 wherein the power source is a replaceable battery or rechargeable battery.
10. An excavator for both road and railway equipped with the front and rear double push shovel system of claim 1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123083771.6U CN216713155U (en) | 2021-12-09 | 2021-12-09 | Front-back double-push soil shovel system for excavator and highway-railway dual-purpose excavator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123083771.6U CN216713155U (en) | 2021-12-09 | 2021-12-09 | Front-back double-push soil shovel system for excavator and highway-railway dual-purpose excavator |
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| CN216713155U true CN216713155U (en) | 2022-06-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117345707A (en) * | 2023-04-10 | 2024-01-05 | 济宁山科工程机械有限公司 | Quick walking hydraulic system of excavator |
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2021
- 2021-12-09 CN CN202123083771.6U patent/CN216713155U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117345707A (en) * | 2023-04-10 | 2024-01-05 | 济宁山科工程机械有限公司 | Quick walking hydraulic system of excavator |
| CN117345707B (en) * | 2023-04-10 | 2024-05-31 | 济宁山科工程机械有限公司 | Quick walking hydraulic system of excavator |
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